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Using molecular dynamic simulations we study three families of continuous core-softened potentials consisting of two length scales: a shoulder scale and an attractive scale. All the families have the same slope between the two length scales…

Statistical Mechanics · Physics 2015-05-28 Ney M. Barraz , Evy Salcedo , Marcia C. Barbosa

We study channelization and slope destabilization driven by subsurface (groundwater) flow in a laboratory experiment. The pressure of the water entering the sandpile from below as well as the slope of the sandpile are varied. We present…

Soft Condensed Matter · Physics 2007-05-23 Alexander E. Lobkovsky , Bill Jensen , Arshad Kudrolli , Daniel H. Rothman

The subpolar gyre is at risk of crossing a tipping point under future climate change associated with the collapse of deep convection. As such tipping can have significant climate impacts, it is important to understand the mechanisms at play…

Atmospheric and Oceanic Physics · Physics 2025-07-24 Swinda K. J. Falkena , Henk A. Dijkstra , Anna S. von der Heydt

A simple model is proposed aimed to investigate how the amount of dissociated ions influences the mechanical stability of viral capsids. After an osmotic and mechanical equilibrium is established with the outer solution, a non-adiabatic…

Soft Condensed Matter · Physics 2024-09-30 Felipe B. M. Aguiar , Thiago Colla

Convective dissolution is the process by which CO$_2$ injected in deep geological formations dissolves into the aqueous phase, which allows storing it perennially by gravity. The process results from buoyancy-coupled Darcy flow and solute…

Fluid Dynamics · Physics 2022-07-06 Jayabrata Dhar , Patrice Meunier , François Nadal , Yves Méheust

We present experimental data and their theoretical interpretation for the decay rates of temperature fluctuations in a thin layer of a fluid heated from below and confined between parallel horizontal plates. The measurements were made with…

Statistical Mechanics · Physics 2013-05-15 Jaechul Oh , José M. Ortiz de Zárate , Jan V. Sengers , Guenter Ahlers

Defects such as oxygen vacancy are widely considered to be critical for the performance of HfO2-based devices, and yet atomistic mechanisms underlying various exotic effects such as wake-up and fluid imprint remain elusive. Here, guided by…

Materials Science · Physics 2023-03-03 Liyang Ma , Shi Liu

Black phosphorus (BP) has attracted significant interest as a monolayer or few-layer material with extraordinary electrical and optoelectronic properties. However, degradation in air and other environments is an unresolved issue that may…

Accretion shocks are thought to play a crucial role in the early stages of star and planet formation, but their direct observational evidence remains elusive, particularly regarding the molecular tracers of these processes. In this work, we…

The mechanical response and load bearing capacity of high performance polymer composites changes due to diffusion of a fluid, temperature, oxidation or the extent of the deformation. Hence, there is a need to study the response of bodies…

Classical Physics · Physics 2013-05-17 Satish Karra , K. R. Rajagopal

BiVO$_4$ is a promising photocatalyst for efficient water oxidation, with surface reactivity determined by the structure of active catalytic sites. Surface oxidation in the presence of oxygen vacancies induces electron localization,…

We analyze the stability of a low-order coupled sea ice and climate model and extract the essential physics governing the time scales of response as a function of greenhouse gas forcing. Under present climate conditions the stability is…

Atmospheric and Oceanic Physics · Physics 2011-10-13 W. Moon , J. S. Wettlaufer

Self-organization of moving objects in hydrodynamic environments has recently attracted considerable attention in connection to natural phenomena and living systems. However, the underlying physical mechanism is much less clear due to the…

Soft Condensed Matter · Physics 2015-02-19 Yusuke Goto , Hajime Tanaka

The North Atlantic Oscillation (NAO) monthly index is studied from 1825 till 2002 in order to identify the scaling ranges of its fluctuations upon different delay times and to find out whether or not it can be regarded as a Markov process.…

Chaotic Dynamics · Physics 2009-11-10 C. Collette , M. Ausloos

This study presents a 13 years survey of haze UV extinction profiles, monitoring the temporal evolution of the detached haze layer (DHL) in Titan's upper atmosphere (350-600 km). As reported by West et al. 2011 (GRL vol.38, L06204) at the…

Earth and Planetary Astrophysics · Physics 2021-02-11 Benoît Seignovert , Pascal Rannou , Robert A. West , Sandrine Vinatier

Accretion disk outbursts, and their subsequent decline, offer a unique opportunity to constrain the physics of angular momentum transport in hot accretion disks. Recent work has centered on the claim by Cannizzo et al. that the exponential…

Astrophysics · Physics 2009-10-30 Ethan T. Vishniac

The Atlantic surface currents associated with the Atlantic Meridional Overturning Circulation (AMOC) play a central role in regulating Earth's climate, yet their large scale dynamical response to climate variability remains poorly…

Atmospheric and Oceanic Physics · Physics 2026-04-14 Han Huang , Ningning Tao , Hongyu Wang , Teng Liu , Fei Xie , Xichen Li , Yongwen Zhang , Niklas Boers , Jingfang Fan , Deliang Chen , Xiaosong Chen

We present a theoretical study of the impact of oxygen diffusion in oxide crystals on metal dopants ionic state and the conduction type under dynamic changes. The slow changes under thermal equilibrium are provided in a companion, Part I…

Materials Science · Physics 2018-06-06 Misha Sinder , Zeev Burshtein , Joshua Pelleg

We present a theoretical description of macroscopic diffusion caused by convective overshoot in pure-hydrogen DA white dwarfs using three-dimensional (3D), closed-bottom, radiation hydrodynamics CO$^5$BOLD simulations. We rely on a new grid…

Solar and Stellar Astrophysics · Physics 2019-07-10 Tim Cunningham , Pier-Emmanuel Tremblay , Bernd Freytag , Hans-Günther Ludwig , Detlev Koester

The New Horizons spacecraft has found evidence for geologic activity on the surface of Pluto, including extensional tectonic deformation of its water ice bedrock (see Moore et al., 2016). One mechanism that could drive extensional tectonic…

Earth and Planetary Astrophysics · Physics 2016-08-03 Noah P. Hammond , Amy C. Barr , Edgar M. Parmentier